[Shotimes] Front Rotor Warping

[Leigh Smith]

What kind of pads and break-in procedure?
Leigh

Jim and Debbie Leyden wrote:
> A little over a year ago I upgraded my brakes to the 11.6 front rotors.
> When I did the conversion I used new pads, rotors, brackets, slider pins,
> calipers and backing plates.  The knuckles were purchased from a boneyard.
> About six months ago the car started to vibrate when braking.  I checked the
> front rotors and found that there were casting porosities in them.  I talked
> to the place where I purchased them and they agreed to credit me the cost
> towards a set of PowerSlot rotors.  Well, now six months later I again have
> a nasty vibration from the front end when braking.  My wife and I have been
> VERY careful with these brakes so as to not overheat them. (I DO drive
> rather hard but I use engine braking as well as brakes)  I talked to the
> shop where I purchased them and was told that the same situation had arisen
> with the owners car (powerslots also) and he merely had to take them out and
> REALLY heat them up to correct the problem.  I tried this, it seemed to work
> for a little while (couple weeks they were fine) but now the shaking is back
> and even worse then before.
> 
> Any clues as to why I can't keep a set of rotors from warping?
> 
> Jim
> '93 MTX
> perfect for that commercial where the guy is shaking his chocolate milk.
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